CETMIC   05378
CENTRO DE TECNOLOGIA DE RECURSOS MINERALES Y CERAMICA
Unidad Ejecutora - UE
artículos
Título:
Analysis of tetramethylammoniummontmorillonite and retention of toluene from aqueous solution
Autor/es:
VIDAL, NURIA CAROLINA, VOLZONE CRISTINA.
Revista:
APPLIED CLAY SCIENCE
Editorial:
Elsevier Science Publishers B.V
Referencias:
Lugar: Amsterdam; Año: 2009 vol. 45 p. 227 - 231
ISSN:
0169-1317
Resumen:
Non-ionic organic contaminants, such as toluene, can be effectively absorbed by organo-montmorillionite.
The tetramethylammonium (TMA)montmorillonites were prepared by ion-exchange and used to evaluate
toluene uptake from water. The TMAmontmorillonites were characterized by total organic carbon
determinations, swelling index, X-ray diffraction, thermal analyses, and infrared spectroscopy. Toluene
adsorption was measured by UVvisible spectrophotometry. The thermal stability of the TMAmontmorillonites
decreased as TMA addition increased; the total mass loss decreased with increasing temperature up
to 500 °C. The amount of carbon retained by the TMAmontmorillonites was proportional to the area of the
infrared band at 1488 cm−1 (asymmetric CH bending vibration of CH3 group). The retention of toluene by
TMAmontmorillonites increased from 0.2 to 0.22 mg g−1 mainly to interlayer adsorption. The adsorption of
toluene influenced the OH-stretching vibration.montmorillonites were prepared by ion-exchange and used to evaluate
toluene uptake from water. The TMAmontmorillonites were characterized by total organic carbon
determinations, swelling index, X-ray diffraction, thermal analyses, and infrared spectroscopy. Toluene
adsorption was measured by UVvisible spectrophotometry. The thermal stability of the TMAmontmorillonites
decreased as TMA addition increased; the total mass loss decreased with increasing temperature up
to 500 °C. The amount of carbon retained by the TMAmontmorillonites was proportional to the area of the
infrared band at 1488 cm−1 (asymmetric CH bending vibration of CH3 group). The retention of toluene by
TMAmontmorillonites increased from 0.2 to 0.22 mg g−1 mainly to interlayer adsorption. The adsorption of
toluene influenced the OH-stretching vibration.montmorillonites were characterized by total organic carbon
determinations, swelling index, X-ray diffraction, thermal analyses, and infrared spectroscopy. Toluene
adsorption was measured by UVvisible spectrophotometry. The thermal stability of the TMAmontmorillonites
decreased as TMA addition increased; the total mass loss decreased with increasing temperature up
to 500 °C. The amount of carbon retained by the TMAmontmorillonites was proportional to the area of the
infrared band at 1488 cm−1 (asymmetric CH bending vibration of CH3 group). The retention of toluene by
TMAmontmorillonites increased from 0.2 to 0.22 mg g−1 mainly to interlayer adsorption. The adsorption of
toluene influenced the OH-stretching vibration.visible spectrophotometry. The thermal stability of the TMAmontmorillonites
decreased as TMA addition increased; the total mass loss decreased with increasing temperature up
to 500 °C. The amount of carbon retained by the TMAmontmorillonites was proportional to the area of the
infrared band at 1488 cm−1 (asymmetric CH bending vibration of CH3 group). The retention of toluene by
TMAmontmorillonites increased from 0.2 to 0.22 mg g−1 mainly to interlayer adsorption. The adsorption of
toluene influenced the OH-stretching vibration.montmorillonites was proportional to the area of the
infrared band at 1488 cm−1 (asymmetric CH bending vibration of CH3 group). The retention of toluene by
TMAmontmorillonites increased from 0.2 to 0.22 mg g−1 mainly to interlayer adsorption. The adsorption of
toluene influenced the OH-stretching vibration.−1 (asymmetric CH bending vibration of CH3 group). The retention of toluene by
TMAmontmorillonites increased from 0.2 to 0.22 mg g−1 mainly to interlayer adsorption. The adsorption of
toluene influenced the OH-stretching vibration.montmorillonites increased from 0.2 to 0.22 mg g−1 mainly to interlayer adsorption. The adsorption of
toluene influenced the OH-stretching vibration.fluenced the OH-stretching vibration.